Oscillating sprinkler



E. DAVIS 2.l8l,227

I OSCILLATING SPRINKLER Nov. 28, 1939.

Original Filed Aug; 23, 1937 Patented Nov. 28,

This invention relates to water sprinklers and PATIENTOFFICE f :OS'CILLATING SPRINKLER,

Ellery L. Davis, Lincoln, Nebr.

Application more particularly to an automatic oscillating sprinkler, that is, a sprinkler having a discharge nozzle or nozzles which oscillates to spray or 5 cover a rectangular plot orsurface to fully and evenly cover all parts of a lawn or the like.

An object of the invention is to provide such a device which is automatic in operation, the discharge nozzles being oscillated by the action of the water under pressur the device for discharge e which is admitted to therefrom.

Another object of the invention is to provide a sprinkler having a primary oscillating member and a secondary oscillating member mounted thereon, the axes of oscillation of the two members being preferably parallel but necessarily not coincident.

Another object of the invention is to provide the primary oscillating member with an adjustable weight, the variance regulates the frequency of which determines or of oscillation.

Other objects and advantages will appear when considered in connection drawing and description with the accompanying in which- Fig. 1 shows a front elevation with the oscil- Fig. 2 is a side view, partly the arm at dead center.

the right hand extreme in section, showing In the drawing in which like numerals indicate similar parts, 6 indicates a supporting base to which is clamped a fixed hollow spindle 1. coupling 8 surrounds the spindle l, and to swing or pivot around the same.

A pipe is adapted A primary oscillating member comprising a hollow-pipe or shaft 9 fits into the coupling 8 and communicates through an opening 811. in the spindle 1 with a hose coupling l9.

Mounted for adjustable movement, up or down on the pipe 9, is a weight ll the function of which will be described later.

the pipe 9 is an adjustable bracket l2 having arms l3 serving as limit stops and also serving to respective ends pipe unions l8 connect the fan-shaped disl1 and washers charge nozzles I9 thereto.

water from the pipe 9 to noted that the nozzles I their axes indicated by the of the delivered spray.

width Extending perpendicul l6, which as by nuts Openings l5a' admit the arm l5. It will be 9 may be turned about line :c-a: to vary the y mm the base 5 s Also mounted on I a coupling at the upper a stationary rod 29, which at its upper end has. attached thereto, as by a clamp 2!, a horizontal bar 22, said bar having pins23 at its respective ends projecting outwardly therefrom in one direction. One of theunionslli has a rod 24 ex- 5 tending downwardly from its base, said rod being confined within the space between the pins'or rollers 23. y

In operation,' water enters under pressure through the hose connection I9, through the spin- 10 dle I, and up through the oscillating arm or pipe 9, thence through thelongitudinal shaft or arm l5 and is then sprayed from the respective nozzles. The water under pressure passing in the manner described causes the pipe '9 by the back pressure 15 or reaction to move to the left about its axis designated K-K, whereupon the rod 29 strikes or impinges the pin orroller 23 at the left hand endof the bar 22. This causes the nozzles to travel or swing to the left about the axis LL, 20 which due to the force of the water issuing from the nozzles causes, the oscillating pipe9 to swing back to the right, whereupon the rod 20 strikes the pin 23 at the right hand end of the bar 22, causing the nozzles to swing to the right, which 25 causes the pipe 9 to again swing back to the left. Thus when water under pressure is issuing from the nozzles the pipe 9 is continually oscillated. The adjustable weight ll affords a means of regulating the frequency of oscillation, the oscillation being slower as the weight is raised. It will be noted that in ordinary operation the limit stops l3 do not strike the base member 6, for the apparatus reverses itself against the air only.

The device is adapted to spray a rectangular plot of ground and of course various types and numbers of nozzles can be installed.

The hinged feet 59 may be used to level the sprinkler on uneven ground if desired.

The drawing shows a vertical arrangement but the same principle could be applied to a horizontal or inclined arrangement.

I claim:

1. A sprinkler comprising a base, a hollow '45 spindle mounted thereon, a primary oscillating pipe pivoted to the spindle, an adjustable weight mounted on the pipe, a bracket mounted on the pipe arranged to strike the base and limit the oscillation of the pipe, a cross tube mounted in 50 end of the primary ostube terminating at its cillating pipe, said cross ends in unions to which are attached discharge nozzles forming secondary oscillating pipes so disposed that the reaction of the discharge from the nozzles swings the primary pipe in one direction and the reversal of the nozzles swings the said pipe in the opposite direction, a rod rigidly attached to the base and a bracket attached to the upper end thereof, pins mounted on the ends of the bracket, and means extending from one of the unions to contact said pins and reverse the movement of the primary oscillating pipe.

2. A sprinkler comprising a base, a main oscillating pipe pivoted to the base, an upstanding rod rigid with the base, a cross bracket attached to the upper end of said rod, and having pins extending from both ends thereof, a secondary oscillating pipe pivoted on the upper end of the main oscillating pipe and provided with a nozzle so disposed that the reaction of the. discharge.

from the nozzle swings the said main pipe, and a trip rod extending from the secondary pipe to contact with said pins respectively and thereby reverse the direction of swing of the oscillating pipes, the trip rod being. of sufiicient length to remain in contact with each of the pins respec tively at the beginning and during the major part of the swing of the main oscillating pipe toward said pin, whereby the oscillation of the nozzle is effected gradually during each swing of the main oscillating pipe.

3. A sprinkler comprising an upright rod, an oscillating upright pipe beside the rod, an oscillating nozzle pivotally supported by and communicating with the upper end of said pipe, and

means actuated by the reaction of the discharge from said nozzle to automatically oscillate the pipe and also to automatically and gradually oscillate the nozzle with respect to said pipe, said means to gradually oscillate the nozzle including stops fixed to the rod, and a trip rod projecting from the nozzle between said stops and of sumcient length to have wiping contact with each of said stops at the beginning and during the major part of the swing of the upright pipe toward said stop.

4. A sprinkler comprising a base, a hollow spindle-supported horizontally on the base and adapted for connection to a supply pipe, a primary oscillating pipe pivoted on the spindle to swing in a vertical plane above the base, a secondary oscillating pipe mounted in a bearing at the upper end of the primary pipe and provided with a nozzle swinging in a vertical plane parallel to the plane of oscillation of the primary pipe and so disposed. that the reaction of the discharge from the nozzle swings the primary pipe in one direction and the reversal of the nozzle swings said pipe in the opposite direction, a support on the base, provided with opposite stops, and a trip rod projecting from the nozzle between said stops and of sufiicient length to have wiping contact with each of said stops at the beginning and during the major part of the swing of the primary pipe toward said stop.

ELLERY L. DAVIS. 

